Practice and demonstration equipment



Feb. 25, 1941. ME 2,232,685

PRACTICE AND DEMONSTRATION EQUIPMENT Filed Aug. 17, 1940 3 Sheets-' Sheet 2 .9; z; ZZ f4 22 Z5 Z9 II? 2' I Inventor Attorney N PRACTICE AND DEMONSTRATION EQUIPMENT Filed Aug. 17, 1940 a Sheeis-Sheet-b' fdward Jfaavf oneroy A fiomey Patented Feb. 25, 1941 UNITED STATES PATENT OFFICE PRACTICE AND DEMONSTRATION EQUIPMENT 7 Claims.

My invention relates to improvements in combined practice and demonstration apparatus for use in connection with surgery.

The invention is designed with the particular purpose in View of providing apparatus for the practice and demonstration of transurethral surgery of the prostate gland so that the operation may be leisurely scrutinized and technique developed to a high degree of efficiency, speed and accuracy acquired, tissue recovered for microscopic examination and experimentation indulged in as desired, all under conditions similar to those existing in connection with such surgery with a living patient.

To the accomplishment of the above, and subordinate objects presently appearing, a preferred embodiment of my invention has been illustrated in the accompanying drawings set forth in detail in the succeeding description and defined in the claims appended hereto.

In said drawings:

Figure 1 is a view, partially diagrammatic, in side elevation of the preferred embodiment of my invention illustrating the same conditioned for the performance of surgery.

Figure 2 is a similar view of the apparatus conditioned for recovery of tissue through the medium of an evacuator.

Figure 3 is a view in transverse vertical section of the glass container and support together with associated parts.

Figure 4 is a view in top plan, and

Figure 5' is a view of the tissue clamp with tissue therein.

Referring to the drawings by numerals, the apparatus of my invention comprises as its'ba'sic element, a substantially spherical container l, preferably of glass, or other transparent insulation material, provided with a cylindrical side 40 neck 2* outstanding radially therefrom, and a top radial nipple 3' upstanding therefrom, the neck 2 having a central bottom aperture 4 therein all for a purpose presently seen. The container, as will be understood, is an artificial bladder.

A flat base support 5 of any suitable material is provided for the container I and which is formed with a concave shallow seat 6 in its'top face for receiving the bottom of the container l. The container i is detachably secured in the seat 6 by means of a curved clamping yoke I of any suitable metal fitting crosswise over the top of the container and provided with a central aperture 8 therein for the extension of the nipple 3 therethrough, the ends of the yoke i being detachably secured to the top of the base 5 by means of a pair of coil springs 9 hooked through apertures ill in said ends and secured to hooks ll turned into the base 5.

The neck 2 has an end bead l2 to facilitate retaining there on a rubber closure cap I3 frictionally gripping said neck and provided with a reduced resilient extension sleeve l4 axially aligned with said neck. The sleeve M and cap [3 are designed for the extension therethrough, into the container I, of the cutting end of a resectoscope, designated 15, of well-known type and operation and therefore illustrated conventionally. Suffice it to explain, that such surgical cutting instruments, as is well known, include a source of electricity such as a battery It, connected to the lamp of the resectoscope by conductors ll a high-pressure electrical unit i6 for supplying cutting current to the device through conductors it, a pair of insulated positive and negative electrodes, [1, I8, a water supply represented at l9, which supplies water to the device through tube 36 and a cuttingloop, not shown, at the cutting end of the instrument adapted for reciprocation at will. The negative electrode lit, in the present invention, is attached to the neck 2 by means of a plug of insulation material l8 suitably secured in the beforementioned aperture 4, said electrode l8 corresponding to the patient electrode and being connected at its inner end to a foil electrode 20 in the neck 2 suitably secured therein and extending substantially to the inner end of said neck 2 for a purpose presently seen. As will be understood, the negative electrode I8 is connected at its outer end by an insulated wire, not shown, to the electrical unit It". 35

Means are provided for maintaining a constant flow of water from the source of supply It through the container I comprising a T-fitting 22 threaded onto the nipple 3 with an overfiow line 23 attached to one end for discharge in a catch basin 24, and a rubber finger cot 22' attached to its other end and serving a purpose to be explained. A pet cock 25 is provided in the overflow line 23 to close the same under conditions presently apparent.

In the use of the invention, as so far described, tissue 26, preferably animal, is compressed in a split clamping ring 26, as shown in Figure 5, fitting in the inner end of the neck 2 in contact with the foil electrode 20 said ring being of con- 50 ductive resilient material and adapted to=-frictionally interlock with said neck. The tissue 26' is cut into segments, as shown in Figure 5, and assembled to represent the lobes of the human prostate gland. The resectoscope i5 is next inserted in proper position through the neck 2 by way of sleeve l 4 until the cutting end is located as desired relative to the tissue 26'. As will be seen, the sleeve I4 forms a water-tight seal around the 5 shank of the resectoscope and together with the resilient cap l3 permits manipulation of the resectoscope in the body of the tissue laterally so that the tissue 26' may be cut with a slicing action under reciprocation of the cutting loop of 10 the instrument By operating the instrument to reciprocate the cutting loop, slices may be cut from the tissue 26' until all the tissue that it is desired to remove has been cut away. The water from the supply source l9 fills the container I and 15 overflows out of line 23 whereby a constant flow is maintained through said container. This constant flow of water through said container provides for washing away of the cut tissue 26 from the cutting area to provide for clear vision 20 by the operator of the cutting field. Preferably a suitable screen 21 is provided in the mouth of the nipple 3 to prevent tissue 26 from being washed out during use of the resectoscope. The current passes through the tissue 26 and ring 26 25 to foil electrode 20 and out by way of negative electrode l8 all as need merely be mentioned in passing.

As will be obvious, the operator may abandon at any time the telescope and view what he has 30 done through the side of the container l and he can see the tissue he has cut lying in the container l and may leisurely practice or demonstrate the difiicult orientation required in the use of the instrument concerned.

35 If it is desired to recover cut tissue, from the container I, as for microscopic examination, the resectoscope l5 may be withdrawn and one end of a pump-type evacuator 28 may be inserted into the container by way of sleeve [4, cup l3, and

40 neck 2, to pump out such tissue as is desired. Preferably the evacuator is of the Ellik type, commercially known, and is used in connection with the beforementioned water supply l9. Such instruments, as is well known, comprise a tubular 45 shank 29 having a rubber tube 30 at the outer end thereof connected to a nipple 3| of a T- coupling 32 carrying a removable transparent collecting bulb 33 and a'compressible and expansible bulb 34. The shank 29 carried a pet cock 35 50 adapted for connection of the line 36 from the water supply l9 thereto. By manipulation of the bulb 34 the water and tissue in the container I may be abstracted by suction and forced into the collecting bulb 33. The finger cot 22, in this 55 operation, functions as a pressure overflow trap for air pressure created in the container 1 under compression of the bulb 34. In the described recovery operation, the pet cock 2'5, manifestly, will be closed.

The foregoing will, it is believed, suflice to impart a clear understanding of my invention without further explanation.

Manifestly the invention, as described, is susceptible of modification without departing from 55 the inventive concept and right is herein reserved to such modifications as fall within the scope of the subjoined claims.

Having described the invention, what is claimed as new is;

70 1. The combination with a resectoscope including a water supply to the same and a pair of positive and negative electrodes, respectively, of a transparent globe-like container having a laterally extending neck for the insertion of the re- 76 sectoscope thereinto for cutting operation therein on tissue submerged in water from said water supply, means on said neck forming a. seal around said resectoscope and around the outer end of the neck, means to detachably secure tissue in said neck for the passage of electrical current therethrough and means to attach the negative electrode to said neck to extend into the same into contact with said tissue.

2. The combination with a resectoscope including a water supply to the same and a pair of positive and negative electrodes, respectively, of a transparent globe-like container having a laterally extending neck for the insertion of the resectoscope thereinto for cutting operation therein on tissue submerged in water from said water supply, a resilient cap on said neck forming a seal around said resectoscope and around the outer end of the neck, means to detachably secure'tissue in said neck for the passage of electrical current therethrough, means to attach the negative electrode to said neck to extend into the same into contact with said tissue, a water overflow nipple upstanding from said container, and a valved overflow line extending from said nipple for draining overflow water into a receptacle.

3. The combination with a resectoscope including a water supply to the same and a pair of positive and negative electrodes, respectively, of a transparent globe-like container having 2, laterally extend-ing neck for the insertion of the resectoscope thereinto for cutting operation therein on tissue submerged in water from said water supply, a resilient cap on said neck forming a seal around said resectoscope and around the outer end of the neck, means to detachably secure tissue in said neck for the passage of electrical current therethrough, means to attach the negative electrode to said neck to extend into the same into contact with said tissue, said cap including a cup-like end fitting over said neck and a resilient extension telescopically fitting over said resectoscope and flexible to permit oscillatory manipulation of the resectoscope in said neck.

4. The combination with a resectoscope including a water supply to the same and a. pair of positive and negative electrodes, respectively, of

' a transparent globe-like container having a laterally extending neck for the insertion of the resectoscope thereinto for cutting operation therein on tissue submerged in water from said Water supply, a resilient cap on said neck forming a seal around said resectoscope and around the outer end of the neck, means to detachably secure tissue in said neck for the passage of electrical current therethrough, means to attach the negative electrode to said neck to extend into the same into contact with said tissue, a water flow nipple upstanding from said container, at T fitting detachably secured to said nipple, a valved over- 110 flow line extending from one end of said fitting, and a resilient bulb attached to the other end of said fitting and forming an air pressure trap thereon.

5. Apparatus for the practice of transureth-ral surgery with a resectoscope on tissue and for flooding with liquid during such practice comprising a base, a transparent globe-like container having a bottom adapted to seat on said base, a laterally extending neck on said container for the insertion of the resectoscope therein, an upstanding liquid overflow nipple on top of the container, a cap of resilient flexible material fitting over said neck to seal the same and having an extension sleeve for the projection of the resectoprising a base, a transparent globe-like container having a bottom adapted to seat on said base, a laterally extending neck on said container for the insertion of the resectoscope therein, an upstanding liquid overfiow nipple on top of the container, a cap of resilient flexible material fitting over said neck to seal the same and having an extension sleeve for the projection of the resectoscope therethrough into said neck, said sleeve fitting around the resectoscope to form a water tight seal around the same, means to detachably secure tissue in said neck, and means to detachably secure said container on said base, the means first mentioned comprising a split tissue clamping ring adapted to fit in said neck.

7. Apparatus for the practice of transurethral surgery with a resectoscope on tissue and for flooding with liquid during such practice comprising a base, a transparent globe-like container having a bottom adapted to seat on said base, a laterally extending neck on said container for the insertion of the resectoscope therein, an upstanding liquid overflow nipple on top of the container, a cap of resilient flexible material fitting over said neck to seal the same and having an extension sleeve for the projection of the resectoscope therethrough into said neck, said sleeve fitting around the resectoscop-e to form a water tight seal around the same, means to detachaoly secure tissue in said neck, and means to detachably secure said container on said base, the last mentioned means comprising a curved yoke spanning the top of said container, and having ends yieldingly attached to said base. 

